Academic literature on the topic 'All-optical helicity-independent switching'

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Journal articles on the topic "All-optical helicity-independent switching"

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Gao, Shihan, Runji Cai, Wanjie Xiong, and Chudong Xu. "Influence of a damping parameter on helicity-independent all-optical switching." Optics Express 29, no. 20 (2021): 32535. http://dx.doi.org/10.1364/oe.435160.

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Liu, Donglin, Jiawen Weng, Xinyu Song, Wenxi Cai, Suiyan Tan, and Chudong Xu. "Ultrafast write-read event in helicity-independent all-optical switching of GdFeCo." Journal of Magnetism and Magnetic Materials 592 (February 2024): 171824. http://dx.doi.org/10.1016/j.jmmm.2024.171824.

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Fan, Xiaofei, and Xiaoyang Lin. "Thermal impact on ultrafast helicity independent all-optical switching of GdxCo100-x." Journal of Physics: Conference Series 2230, no. 1 (2022): 012025. http://dx.doi.org/10.1088/1742-6596/2230/1/012025.

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Abstract Ultrafast all-optical switching by single femtosecond laser pulse has recently been considered as one of the most potential technologies for the application on high-speed and energy efficient memory device. Here, to ensure such a sophisticated technology to be applicable to more complex environments, we report the dependence of all-optical switching of the ferrimagnet, GdCo, on the ambient temperature. Through heating the GdCo film up to 380 K, we demonstrate the distinct magnetic behaviours and the critical laser fluences of all-optical switching under different composition of Gd. It
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Zimnyakova, Polina E., Daria O. Ignatyeva, Andrey N. Kalish, Xiufeng Han, and Vladimir I. Belotelov. "Plasmonic dichroism and all-optical magnetization switching in nanophotonic structures with GdFeCo." Optics Letters 47, no. 23 (2022): 6049. http://dx.doi.org/10.1364/ol.472046.

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We report on a phenomenon of plasmonic dichroism observed in magnetic materials with transverse magnetization under excitation of surface plasmon polariton waves. The effect originates from the interplay of the two magnetization-dependent contributions to the material absorption, both of which are enhanced under plasmon excitation. Plasmonic dichroism is similar to circular magnetic dichroism, which is at the base of all-optical helicity-dependent switching (AO-HDS) but observed for linearly polarized light, and the dichroism acts upon in-plane magnetized films, where AO-HDS does not take plac
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Huang, Haozhe, Haiwei Wang, Zhihao Zeng, et al. "Investigation on the Effect of Femtosecond Laser Induced Spin Transfer Torque of GdFeCo Alloy." Applied Sciences 11, no. 14 (2021): 6501. http://dx.doi.org/10.3390/app11146501.

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All-optical magnetic switching (AOS) provides a novel approach to improve writing ability and energy efficiency compared to those utilized in the mainstream magnetic data storage products. Rare earth-transition metals (RE-TM) exhibit extremely fast magnetization switching induced by one single incident linearly polarized laser pulse; however, the mechanism is still ambiguous. Here, we show by atomistic spin simulation that the laser induced spin transfer torque dominates the magnetization reversal of Fe sublattice in Gd25Fe75 alloy, and that the switching speed of Gd25Fe75 alloy is relevant to
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Davies, C. S., J. H. Mentink, A. V. Kimel, Th Rasing, and A. Kirilyuk. "Helicity-independent all-optical switching of magnetization in ferrimagnetic alloys." Journal of Magnetism and Magnetic Materials, August 2022, 169851. http://dx.doi.org/10.1016/j.jmmm.2022.169851.

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Hübner, Wolfgang, Georgios Lefkidis, and Guoping Zhang. "All-optical spin switching on an ultrafast time scale." Journal of Physics: Condensed Matter, June 25, 2024. http://dx.doi.org/10.1088/1361-648x/ad5bae.

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Abstract Information technology revolution demands bigger and faster magnetic storage technology. All-optical spin switching (AOS) may offer a solution, where an ultrafast laser pulse alone can switch magnetization from one direction to another faithfully within 1-10 ps, free of a magnetic field. There are two types of switching: One is the helicity-dependent all-optical spin switching (HD-AOS) and the other the helicity-independent all-optical spin switching (HID-AOS). In a few alloys, one single laser pulse, with sufficient fluence, can switch spin, but the majority of magnetic materials requires
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Peng, Y., G. Malinowski, J. Gorchon, et al. "Single-Shot Helicity-Independent All-Optical Switching in Co/Ho Multilayers." Physical Review Applied 20, no. 1 (2023). http://dx.doi.org/10.1103/physrevapplied.20.014068.

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Gweha Nyoma, Danny Petty, Maxime Vergès, Michel Hehn, et al. "Size effect on single pulse all-optical helicity-independent switching in GdFeCo disk arrays." Applied Physics Letters 123, no. 5 (2023). http://dx.doi.org/10.1063/5.0150250.

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We experimentally demonstrate single pulse toggle switching of the magnetization of GdFeCo disks with perpendicular to film plane anisotropy, which diameter ranges from 3 μm to 400 nm using 35 fs linearly polarized laser pulses. Two different magnetic states can be observed depending on the laser fluence: either a deterministic switching of the disk magnetization or a randomly oriented disk. We report that the fluence required to observe both magnetic states show a non-monotonic behavior with disk diameter and that the smallest disks require the lowest minimum fluence for achieving single puls
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Wei, Jiaqi, Boyu Zhang, Michel Hehn, et al. "All-optical Helicity-Independent Switching State Diagram in Gd - Fe - Co Alloys." Physical Review Applied 15, no. 5 (2021). http://dx.doi.org/10.1103/physrevapplied.15.054065.

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Dissertations / Theses on the topic "All-optical helicity-independent switching"

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Gweha, Nyoma Danny Petty. "Size effects on all-optical helicity-independent switching in magnetic materials." Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0035.

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Au cours des quinze dernières années, le retournement tout optique à impulsion unique a été principalement observée et étudiée dans des films minces à base de métaux de transition et de Gd, avec un grand potentiel pour permettre de nouvelles applications de stockage de données, de mémoire, de logique magnétique rapide et économe en énergie. Pour se rapprocher de la nanotechnologie ou de la microtechnologie, il faut concevoir d'autres matériaux contenant peu ou pas de terres rares et réduire latéralement la taille des échantillons. Dans ce travail, nous démontrons expérimentalement le retournem
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Wei, Jiaqi. "Magnetization manipulation induced by spin current and ultrafast laser." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0121.

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La manipulation de l’aimantation est un des sujets de recherche les plus étudiés dans le domaine de l’électronique de spin. Différentes méthodes de manipulations peuvent exciter les propriétés dynamiques de l’aimantation à différentes échelles de temps. Parmi les phénomènes dynamiques, la précession de l’aimantation et la désaimantation ultrarapide ont suscité un intérêt particulier. La fréquence de précession de l’aimantation est de l’ordre du GHz et correspond à une période de centaines de picosecondes. Cette précession est le mécanisme à l’œuvre dans les nano-oscillateurs à transfert de spi
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